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Thread: Is possible transconding files on demand?

  1. #1

    Default Is possible transconding files on demand?

    Hi,
    I have a client that has thousands of videos files in flv, not H254. He need show video on iphone/ipad. Is possible transconding files to H254?

    thank you

  2. #2
    Join Date
    May 2011
    Posts
    456

    Default

    Wowza Transcoder AddOn supports live feed, not on demand.

    -Lisa

  3. #3
    Join Date
    May 2011
    Posts
    456

    Default

    I should add that the Wowza Transcoder supports these video and audio codecs:

    Video decoding: H.264, MPEG2, MPEG4 Part 2
    Video encoding: H.264
    Audio decoding: AAC, MP3, MPEG 1 Part 1/2, Speex, G.711 (a-law and mu-law)
    Audio encoding: AAC

    -Lisa

  4. #4
    Join Date
    Jan 2012
    Posts
    12

    Default

    Hi.
    1. Is there any way to play a video on demand file using Wowza Transcoder? Maybe using Server-side Modules or Extensions?
    2. Will Wowza Transcoder support Linux distro - CentOs or Debian?

  5. #5

    Default

    Hello nick_g,

    1. You could potentially use the StreamClassExample with Playlists do create a streamname which you could then feed into the Wowza transcoder. But it would not be "On Demand" exactly, unless you wrote some code to create the playlists. And then how many VOD files will you be able to transcode on the fly? 30, 50, 100? It just makes more sense to transcode the VOD files offline and then you will be able to stream to thousands of users. And you will only be transcoding them one time, instead of over and over.

    2. Those distros should work.

  6. #6
    Join Date
    Jan 2012
    Posts
    12

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    Thanks randall.

    Can anybody give advise which encoder to use? I need server side encoder based on linux distro. Encoder have to support Multi-birate encoding because a need to play video on demand with Adaptive Streaming

  7. #7
    Join Date
    Dec 2007
    Posts
    21,962

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    We recommend MS Expression 4 Encoder because it encodes key frame aligned sets, as is necessary for switching in multi-bitrate streaming.

    http://www.wowza.com/forums/content....ideo-on-Demand

    Richard

  8. #8
    Join Date
    Jan 2012
    Posts
    12

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    Yes I read this article. But it isn't server side encoder and it requires Windows Server.

    Is there any other product for multi-bitrate streaming encoding, compatible with Wowza Adaptive Bitrate Streaming?

    I configured Wowza to play a video on demand file and it works fine, but now there is a problem with preparing video files.

  9. #9

    Default

    There are a few methods listed here: http://smoothstreaming.code-shop.com...aming-Encoding

    Take a look at the ffmpeg example.

  10. #10
    Join Date
    Dec 2007
    Posts
    21,962

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    The key frame alignment part is difficult. I have heard that encoding.com can do it (recently from customer) but my only success has been with MS Expression 4. I don't think ffmpeg can do it.

    Richard

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